Title :
A 2-GHz wide-band direct conversion receiver for WCDMA applications
Author :
Parssinen, Aarno ; Jussila, Jarkko ; Ryynänen, Jussi ; Sumanen, Lauri ; Halonen, Kari A I
Author_Institution :
Electron. Circuit Design Lab., Helsinki Univ. of Technol., Espoo, Finland
fDate :
12/1/1999 12:00:00 AM
Abstract :
A 2-GHz direct conversion receiver for third-generation mobile communications using wide-band code division multiple access achieves -114-dBm sensitivity for 128-kb/s data at 4.096-Mcps spreading rate. The receiver is distributed on four dies. The active RC channel selection filter can be programmed to three different bandwidths from 5 to 20-MHz radio-frequency (RF) spacing; and the gain control is merged with filtering. RF and baseband chips use a 25-GHz, 0.3-μm BiCMOS technology while the two analog-to-digital converters are implemented with a 0.5-μm CMOS. The double-sideband noise figure is 5.1 dB at the 94-dB maximum voltage gain, and the IIP3 and ITP2 are -9.5 and +38 dBm, respectively, The receiver draws 128 mA from a 2.7-V supply
Keywords :
BiCMOS analogue integrated circuits; CMOS integrated circuits; UHF integrated circuits; UHF mixers; active filters; analogue-digital conversion; cellular radio; code division multiple access; digital radio; gain control; radio receivers; 0.35 micron; 0.5 micron; 128 kbit/s; 128 mA; 2 GHz; 2.7 V; 25 GHz; 5 to 20 MHz; 5.1 dB; 94 dB; BiCMOS technology; CMOS ADCs; RF chip; UHF; WCDMA applications; active RC channel selection filter; analog-to-digital converters; baseband chip; code division multiple access; gain control; third-generation mobile communications; wideband CDMA; wideband direct conversion receiver; Bandwidth; Baseband; BiCMOS integrated circuits; Filtering; Filters; Gain control; Mobile communication; Multiaccess communication; Radio frequency; Wideband;
Journal_Title :
Solid-State Circuits, IEEE Journal of
